Improvement in non-conducting covering for boileks, steam-pipes



WASHINGTON HARRIS, OI" PHILADELPHIA, PENNSYLVANIA.

IMPRQVEMENT IN NON-CONDUCTING COVERING FOR BOILERS, STEAM-PIPES, dc.-

Speeificalion filrmingpart of Le'ttcislntent No. 98,865, dated January1?, liTh.

I, \VASHINGTON HARRIS, ot' the city of Pllllddelphia, in the State ofPennsylvania,have irn'ented certain Improi'ements in the Mode ofApplying Heat-Retaining or Non-Conducting-Coverings to Steam Pipes,Drums, Generators, &c., of which the following is a specifi cation:

Nature and ()[y'ccts of flu: lm'enfion;

M y invention relates to the construction and application of :t seriesof curved covering shells or tiles, molded either of brick-clay orofplaster-of-pari-s, or plaster-of-paris and lime, or plaster-of-parisand ashes, or any other suitable poor conductor-of heat, in such amanner that the said series can be readily applied and secured aroundthe pipes or drums, of upon steam-generators, &c., so as to afford acovering of shells or tiles, either witlr'or without. an air-spaceconfined between the said covering-shells and the steam-vessel, theobject-of my invention-being to facilitate in covering and also inuncovering the pipes, drums, or generators without destroying the saidcovering. for reapplication, and inproducing a more effective andreliable preventire of the loss of heat by radiation from the saidheat-containing vessels.

iescriptio-n of the Accompanying Drawings.

Figure l is a'eentral longitudinal section of n steam-pipe and of thehalves of two of the shells or tiles applied thereto at its mid-length,with n vicwof the inner sides of two like shells or tiles in connectionwith the pipe, and with the sections of shells on the middle of thesame. "Figs. 2 and 3 are views of the two ends oi a pair of the saidshells or tiles as applied.

together aroundthe steam-pipe, the dotted lines thereon indicating thelines of unction,

respectively,of the next adjoining pair of tiles.-

G'cneral Description.

The shells or tiles are applied around 5;

steampipeordrmn in the following-manner,

viz: Commencing atone end, two of the shells A are closed togetheraround the same, with a little cement 0t plasterof-paris or any othersuitable cement in each groove-b, and secured together by a wire woundtwo or three times around the outer end and secured therea t, and

then the next pair of shells, with cement in both grooves b and (I,applied around the pipe and slipped along, so as to bring-the end.

tongues, 12 e, of one pair into the end grooves, (Z d, of the otherpair, and with the plane of the two side joints of thelast-applied pairat right angles to the plane of the two. side joints of the immediatelypreceding pair, and so on in succession until thcwhole pipe or drum iscovered, and then securing the last one by winding wire two or threetimes around it and fastening it thereat and finally closing up the twoends of the series with the cement, or with a suitable cap and cement,the intervening shells being sutlieiently held by their tonguesandgrooves alone. Y i

It will be understood without further description that by means of theseshells or tiles, applied as described, an air-chamber, 1:, will belefthetween each section of the series of the hollow cylinders and theheated vessel which it surrounds, which airspace i-n connection with thesaid covering-shells of poor heatcondueting material form together thebest non-conducting covering; thathas as yet been fl-[)1)il0(l, 1lldthat, while the said shells can he applied securely and with facility,they can he removed and reappliedlat any time, without breaking orinjuring them, whenever a leak Q in the steam pipe or drum requires to'he stopped or a new one to be substituted;

' Claim. 7

I claim as my iriveniion- The shells or tiles A A, constructed andapplied to steam pipes, drums, or other heated vessels,so as to producea non-comlneting covering, either with or without the confined anspacehctween the said shells and the vessel covered thereby, substantially asand for the purpose hereiubelorc set forth.

izgarn Z.

NJPETERS. PHOYOLITHOGRAPHER, WASHINGTON. D C.

